Coronary thrombosis and subsequent lysis after a marathon.

A patient who developed an acute anterior myocardial infarction after completion of a marathon is presented. Coronary angiography performed 5 hours after the onset of symptoms showed occlusion of the left anterior descending coronary artery and nonocclusive thrombus in the proximal right coronary artery. Repeat angiography 10 days later showed complete resolution of thrombosis in both arteries. The relation between marathon running and coronary thrombosis is discussed.